target-arm/gdbstub64.c

   1 /*
   2  * ARM gdb server stub: AArch64 specific functions.
   3  *
   4  * Copyright (c) 2013 SUSE LINUX Products GmbH
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, see <http://www.gnu.org/licenses/>.
  18  */
  19 #include "config.h"
  20 #include "qemu-common.h"
  21 #include "exec/gdbstub.h"
  22
  23 int aarch64_cpu_gdb_read_register(CPUState *cs, uint8_t *mem_buf, int n)
  24 {
  25     ARMCPU *cpu = ARM_CPU(cs);
  26     CPUARMState *env = &cpu->env;
  27
  28     if (n < 31) {
  29         /* Core integer register.  */
  30         return gdb_get_reg64(mem_buf, env->xregs[n]);
  31     }
  32     switch (n) {
  33     case 31:
  34         return gdb_get_reg64(mem_buf, env->xregs[31]);
  35         break;
  36     case 32:
  37         return gdb_get_reg64(mem_buf, env->pc);
  38         break;
  39     case 33:
  40         return gdb_get_reg32(mem_buf, pstate_read(env));
  41     }
  42     /* Unknown register.  */
  43     return 0;
  44 }
  45
  46 int aarch64_cpu_gdb_write_register(CPUState *cs, uint8_t *mem_buf, int n)
  47 {
  48     ARMCPU *cpu = ARM_CPU(cs);
  49     CPUARMState *env = &cpu->env;
  50     uint64_t tmp;
  51
  52     tmp = ldq_p(mem_buf);
  53
  54     if (n < 31) {
  55         /* Core integer register.  */
  56         env->xregs[n] = tmp;
  57         return 8;
  58     }
  59     switch (n) {
  60     case 31:
  61         env->xregs[31] = tmp;
  62         return 8;
  63     case 32:
  64         env->pc = tmp;
  65         return 8;
  66     case 33:
  67         /* CPSR */
  68         pstate_write(env, tmp);
  69         return 4;
  70     }
  71     /* Unknown register.  */
  72     return 0;
  73 }